Question

ch 12 i choose a card at random from a well - shuffled deck of 52 cards. there is a 1/4 probability that the card chosen is a spade, a 1/4 probability that the card is a heart, a 1/4 probability that the card is a diamond, and a 1/4 probability that the card is a club. both spades and clubs are black cards, whereas hearts and diamonds are red. the events “card is a heart” and “card is a club” are
impossible events.
independent events.
disjoint events.
statistical events
question 8
1 pts
which of the following is not a rule (or property) of probability?
a probability is always greater than 0.
the total probability of all the events in a sample space is always equal to 1.
a probability is between 0 and 1.
p(event) = 1 - p(event) where event is complement of event.

Explanation:

Question 7

Disjoint events (mutually - exclusive) cannot occur at the same time. A card cannot be both a heart and a club simultaneously.

A probability can be 0 (for an impossible event), so the statement "A probability is always greater than 0" is incorrect.

Answer:

C. disjoint events.

Question 8